Let's solve each part of the problem step by step and write the correct algebraic expressions.
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(a)
Siti bought x kg of green apples and 3 kg of red apples. What was the total mass of all the apples she bought?
- Green apples: $ x $ kg
- Red apples: $ 3 $ kg
- Total mass = green apples + red apples
✔ Algebraic expression:
$$
x + 3
$$
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(b)
Padma cycled p km on Monday. She cycled 8 km less on Tuesday. What was the distance she cycled on Tuesday?
- Monday: $ p $ km
- Tuesday: 8 km less than Monday → $ p - 8 $
✔ Algebraic expression:
$$
p - 8
$$
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(c)
Erynn glued k seashells on a photo frame. She made 5 such photo frames. How many seashells did she use?
- Seashells per frame: $ k $
- Number of frames: 5
- Total seashells = $ 5 \times k $
✔ Algebraic expression:
$$
5k
$$
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(d)
Jiayi typed w words in 40 minutes. How many words did she type in 1 minute?
- Words in 40 minutes: $ w $
- Words per minute = total words ÷ number of minutes
- So, words in 1 minute = $ \frac{w}{40} $
✔ Algebraic expression:
$$
\frac{w}{40}
$$
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✔ Final Answers:
(a) $ x + 3 $
(b) $ p - 8 $
(c) $ 5k $
(d) $ \frac{w}{40} $
These are the algebraic expressions representing each situation.
Parent Tip: Review the logic above to help your child master the concept of represent number worksheet.
